import javax.servlet.ServletException;
import javax.servlet.annotation.WebServlet;
import javax.servlet.http.HttpServlet;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
import java.io.IOException;

/**
 * @author 兴趣使然黄小黄
 * @version 1.0
 */
@WebServlet("/postGetParameter")
public class PostGetParameterServlet extends HttpServlet {

    @Override
    protected void doPost(HttpServletRequest req, HttpServletResponse resp) throws ServletException, IOException {
        // 假设请求依然为 classId 与 userId
        String userId = req.getParameter("userId");
        String classId = req.getParameter("classId");
        resp.getWriter().write("userId = " + userId + ", classId = " + classId);
    }
}
